Good evening Forum friends.
With snow coming down in Chicagoland and being hanging around the house this Sunday without much to do, I decided to pull the trigger on this William Sumner 12Ga SxS. I was not able to find much about this maker from Liverpool and my search in the forum only produced one posting in reference to him, (link below). http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=381868&page=1
According to the information in the link, the address 48 Old Hall will place its manufacture between 1875-1882. Can any one provide any additional information about this maker, (quality, etc.)?

The gun description stated:
Serial no. 2755 [receiver, lower tang, fore-end and barrels], 12 gauge, 30-inch barrels with fixed front bead sight. Damascus finish. Top of barrels marked: WM. SUMNER'S 48 OLD HALL ST. LIVERPOOL. Scroll engraved receiver, each side marked: WM. SUMNER'S. Scroll engraved hammers and lever. Checkered straight walnut stock and splinter fore-end. Barrels are proofed for smokeless powder in England. Round blank brass escutcheon to base of stock. Length of pull: 14 3/8-inches. Weight: 7 pounds.

Question: What type of ammo (max pressure) can you shoot on damascus barrels the have been nitro proved?
Thank you in advance, BillK

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